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ResidualBlockCavlc.cpp
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#include "ResidualBlockCavlc.h"
#include "ParseSlice.h"
#include "CalvcTable.h"
ResidualBlockCavlc::ResidualBlockCavlc(ParseSlice* slice)
{
sliceBase = slice;
trailing_ones_sign_flag = 0;
/*level_suffix = 0;
memset(&levelVal, 0, sizeof(int32_t) * 16);*/
//memset(&runVal, 0, sizeof(int32_t) * 16);
}
bool ResidualBlockCavlc::residual_block_cavlc(
BitStream& bs, int* coeffLevel, int startIdx, int endIdx, uint32_t maxNumCoeff, int& TotalCoeff, RESIDUAL_LEVEL residualLevel, size_t BlkIdx
)
{
memset(coeffLevel, 0, sizeof(uint32_t) * maxNumCoeff);
int coeff_token_length = 0;
int TrailingOnes = 0;
int numberCurrent = getNumberCurrent(residualLevel, BlkIdx);
//获取16bit因为token最长只有16bit
uint16_t coeff_token = bs.getMultiBit(16);
getNumCoeffAndTrailingOnes(numberCurrent, coeff_token, coeff_token_length, TrailingOnes, TotalCoeff);
//读取真正的token长度
int a = bs.readMultiBit(coeff_token_length);
int suffixLength = 0;
int levelSuffixSize = 0;
int levelCode = 0;
int levelVal[16] = { 0 }; //非零系数,带符号
int level_suffix = 0;
int level_prefix = 0;
if (TotalCoeff > 0)
{
if (TotalCoeff > 10 && TrailingOnes < 3)
{
suffixLength = 1;
}
for (size_t i = 0; i < TotalCoeff; i++)
{
if (i < TrailingOnes)
{
trailing_ones_sign_flag = bs.readBit();
levelVal[i] = 1 - 2 * trailing_ones_sign_flag; //3个拖尾系数，只能是1或-1 //1代表-1,0代表+1
}
else
{
//普通非零系数的幅值（Levels）由两个部分组成：前缀（level_prefix）和后缀（level_suffix）
int leadingZeroBits = -1;
for (size_t b = 0; !b; leadingZeroBits++)
{
b = bs.readBit();
}
level_prefix = leadingZeroBits;
if (level_prefix == 14 && suffixLength == 0)
{
levelSuffixSize = 4;
}
else if (level_prefix >= 15)
{
levelSuffixSize = level_prefix - 3;
}
else
{
levelSuffixSize = suffixLength;
}
levelCode = (min(15, level_prefix) << suffixLength);
if (suffixLength > 0 || level_prefix >= 14)
{
//level_suffix
if (levelSuffixSize > 0)
{
level_suffix = bs.readMultiBit(levelSuffixSize);
}
else
{
levelSuffixSize = 0;
}
levelCode += level_suffix;
}
if (level_prefix >= 15 && suffixLength == 0)
{
levelCode += 15;
}
if (level_prefix >= 16)
{
levelCode += (1 << (level_prefix - 3)) - 4096;
}
if (i == TrailingOnes && TrailingOnes < 3)
{
levelCode += 2;
}
if (levelCode % 2 == 0)
{
levelVal[i] = (levelCode + 2) >> 1;
}
else
{
levelVal[i] = (-levelCode - 1) >> 1;
}
if (suffixLength == 0)
{
suffixLength = 1;
}
if (abs(levelVal[i]) > (3 << (suffixLength - 1)) && suffixLength < 6)
{
++suffixLength;
}
}
}
//最后一个非0系数之前的0的个数 TotalZeros 0, 15(4x4)
int TotalZeros = 0;
if (TotalCoeff < endIdx - startIdx + 1)
{
//解码total_zeros
TotalZeros = getTotalZeros(bs, TotalCoeff - 1, maxNumCoeff);
}
else
{
TotalZeros = 0;
}
int runVal[16] = { 0 };
//每个非0系数之前0的个数 zerosLeft
//获取每个非0系数之前到下一个非0之间0的个数 RunBefore
//初始化zerosLeft为TotalZeros
int zerosLeft = TotalZeros;
for (size_t i = 0; i < TotalCoeff - 1; i++)
{
if (zerosLeft > 0)
{
int runbeforeVlcIdx = (zerosLeft <= 6 ? zerosLeft - 1 : 6);
runVal[i] = getRunbefore(bs, runbeforeVlcIdx);
}
else
{
runVal[i] = 0;
}
zerosLeft -= runVal[i];
}
runVal[TotalCoeff - 1] = zerosLeft;
int coeffNum = -1;
for (int i = TotalCoeff - 1; i >= 0; i--) {
coeffNum += runVal[i] + 1;
coeffLevel[startIdx + coeffNum] = levelVal[i];
}
}
return false;
}
int ResidualBlockCavlc::getNumberCurrent(RESIDUAL_LEVEL residualLevel, size_t BlkIdx)
{
int nC = 0;
if (residualLevel == RESIDUAL_LEVEL::ChromaDCLevel)
{
//色度DC固定码表
if (sliceBase->sHeader.sps.ChromaArrayType == 1)
{
nC = -1;
}
else
{
nC = -2;
}
}
else
{
int nA = 0; //左侧块
int nB = 0; //上测块
int luma4x4BlkIdx = BlkIdx;
int cb4x4BlkIdx = BlkIdx;
int cr4x4BlkIdx = BlkIdx;
int BlkIdxA = BlkIdx;
int BlkIdxB = BlkIdx;
int mbAddrA = NA;
int mbAddrB = NA;
int chroma4x4BlkIdx = BlkIdx;
if (residualLevel == RESIDUAL_LEVEL::Intra16x16DCLevel)
{
luma4x4BlkIdx = 0;
}
if (residualLevel == RESIDUAL_LEVEL::CbIntra16x16DCLevel)
{
cb4x4BlkIdx = 0;
}
if (residualLevel == RESIDUAL_LEVEL::CrIntra16x16DCLevel)
{
cr4x4BlkIdx = 0;
}
//亮度
if (residualLevel == RESIDUAL_LEVEL::Intra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::Intra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::LumaLevel4x4)
{
//获取距离宏块左上角的样点位置
int x = InverseRasterScan(luma4x4BlkIdx / 4, 8, 8, 16, 0) + InverseRasterScan(luma4x4BlkIdx % 4, 4, 4, 8, 0);
int y = InverseRasterScan(luma4x4BlkIdx / 4, 8, 8, 16, 1) + InverseRasterScan(luma4x4BlkIdx % 4, 4, 4, 8, 1);
// int mbAddrA = NA;
int luma4x4BlkIdxA = NA;
int xW = NA;
int yW = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrA, x + (-1), y + 0, 16, 16, xW, yW);
if (mbAddrA != NA)
{
//左侧宏块子块索引
luma4x4BlkIdxA = 8 * (yW / 8) + 4 * (xW / 8) + 2 * ((yW % 8) / 4) + ((xW % 8) / 4);
}
// int mbAddrB = NA;
int luma4x4BlkIdxB = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrB, x + 0, y + (-1), 16, 16, xW, yW);
if (mbAddrB != NA)
{
//上侧宏块子块索引
luma4x4BlkIdxB = 8 * (yW / 8) + 4 * (xW / 8) + 2 * ((yW % 8) / 4) + ((xW % 8) / 4);
}
BlkIdxA = luma4x4BlkIdxA;
BlkIdxB = luma4x4BlkIdxB;
}
else if (residualLevel == RESIDUAL_LEVEL::CbIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CbIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CbLevel4x4)
{
//对于ChromaArrayType等于3的相邻4x4色度块的推导过程
//这个过程只在ChromaArrayType等于3时被调用
int x = InverseRasterScan(cb4x4BlkIdx / 4, 8, 8, 16, 0) + InverseRasterScan(cb4x4BlkIdx % 4, 4, 4, 8, 0);
int y = InverseRasterScan(cb4x4BlkIdx / 4, 8, 8, 16, 1) + InverseRasterScan(cb4x4BlkIdx % 4, 4, 4, 8, 1);
int maxW = sliceBase->sHeader.sps.MbWidthC;
int maxH = sliceBase->sHeader.sps.MbHeightC;
// int mbAddrA = NA;
int chroma4x4BlkIdxA = NA;
int xW = NA;
int yW = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrA, x + (-1), y + 0, maxW, maxH, xW, yW);
if (mbAddrA != NA)
{
//左侧宏块子块索引
chroma4x4BlkIdxA = 2 * (yW / 4) + (xW / 4);
}
// int mbAddrB = NA;
int chroma4x4BlkIdxB = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrB, x + 0, y + (-1), maxW, maxH, xW, yW);
if (mbAddrB != NA)
{
//上侧宏块子块索引
chroma4x4BlkIdxB = 2 * (yW / 4) + (xW / 4);
}
BlkIdxA = chroma4x4BlkIdxA;
BlkIdxB = chroma4x4BlkIdxB;
}
else if (residualLevel == RESIDUAL_LEVEL::CrIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CrIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CrLevel4x4)
{
//对于ChromaArrayType等于3的相邻4x4色度块的推导过程
//这个过程只在ChromaArrayType等于3时被调用
int x = InverseRasterScan(cb4x4BlkIdx / 4, 8, 8, 16, 0) + InverseRasterScan(cb4x4BlkIdx % 4, 4, 4, 8, 0);
int y = InverseRasterScan(cb4x4BlkIdx / 4, 8, 8, 16, 1) + InverseRasterScan(cb4x4BlkIdx % 4, 4, 4, 8, 1);
int maxW = sliceBase->sHeader.sps.MbWidthC;
int maxH = sliceBase->sHeader.sps.MbHeightC;
// int mbAddrA = NA;
int chroma4x4BlkIdxA = NA;
int xW = NA;
int yW = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrA, x + (-1), y + 0, maxW, maxH, xW, yW);
if (mbAddrA != NA)
{
//左侧宏块子块索引
chroma4x4BlkIdxA = 2 * (yW / 4) + (xW / 4);
}
// int mbAddrB = NA;
int chroma4x4BlkIdxB = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrB, x + 0, y + (-1), maxW, maxH, xW, yW);
if (mbAddrB != NA)
{
//上侧宏块子块索引
chroma4x4BlkIdxB = 2 * (yW / 4) + (xW / 4);
}
BlkIdxA = chroma4x4BlkIdxA;
BlkIdxB = chroma4x4BlkIdxB;
}
else if (residualLevel == RESIDUAL_LEVEL::ChromaACLevelCb || residualLevel == RESIDUAL_LEVEL::ChromaACLevelCr)
{
//ChromaACLevel
//相邻4x4色度块的推导过程
//这个子句只在ChromaArrayType等于1或2时被调用
//相对于宏块的左上色度样本的索引为chroma4x4BlkIdx的4x4色度块的左上色度样本的位置(x, y)。
int x = InverseRasterScan(chroma4x4BlkIdx, 4, 4, 8, 0);
int y = InverseRasterScan(chroma4x4BlkIdx, 4, 4, 8, 1);
int maxW = sliceBase->sHeader.sps.MbWidthC;
int maxH = sliceBase->sHeader.sps.MbHeightC;
// int mbAddrA = NA;
int chroma4x4BlkIdxA = NA;
int xW = NA;
int yW = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrA, x + (-1), y + 0, maxW, maxH, xW, yW);
if (mbAddrA != NA)
{
//左侧宏块子块索引
chroma4x4BlkIdxA = 2 * (yW / 4) + (xW / 4);
}
// int mbAddrB = NA;
int chroma4x4BlkIdxB = NA;
sliceBase->getMbAddrNAndLuma4x4BlkIdxN(mbAddrB, x + 0, y + (-1), maxW, maxH, xW, yW);
if (mbAddrB != NA)
{
//上侧宏块子块索引
chroma4x4BlkIdxB = 2 * (yW / 4) + (xW / 4);
}
BlkIdxA = chroma4x4BlkIdxA;
BlkIdxB = chroma4x4BlkIdxB;
}
bool availableFlagA = false;
bool availableFlagB = false;
if (mbAddrA == NA ||
(isInterMode(sliceBase->macroblock[sliceBase->CurrMbAddr]->mode) && sliceBase->sHeader.pps.constrained_intra_pred_flag)
&& isInterframe(sliceBase->macroblock[mbAddrA]->mode)
&& sliceBase->sHeader.nalu.nal_unit_type >= 2 && sliceBase->sHeader.nalu.nal_unit_type <= 4)
{
availableFlagA = false;
}
else
{
availableFlagA = true;
}
if (mbAddrB == NA ||
(isInterMode(sliceBase->macroblock[sliceBase->CurrMbAddr]->mode) && sliceBase->sHeader.pps.constrained_intra_pred_flag)
&& isInterframe(sliceBase->macroblock[mbAddrB]->mode)
&& sliceBase->sHeader.nalu.nal_unit_type >= 2 && sliceBase->sHeader.nalu.nal_unit_type <= 4)
{
availableFlagB = false;
}
else
{
availableFlagB = true;
}
if (availableFlagA)
{
if (sliceBase->macroblock[mbAddrA]->mbType == H264_MB_TYPE::P_Skip || sliceBase->macroblock[mbAddrA]->mbType == H264_MB_TYPE::B_Skip)
{
nA = 0;
}
else if (sliceBase->macroblock[mbAddrA]->mbType == H264_MB_TYPE::I_PCM) //if mbAddrN is an I_PCM macroblock, nN is set equal to 16.
{
nA = 16;
}
else
{
if (residualLevel == RESIDUAL_LEVEL::Intra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::Intra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::LumaLevel4x4)
{
nA = sliceBase->macroblock[mbAddrA]->mb_luma_4x4_non_zero_count_coeff[BlkIdxA];
}
else if (residualLevel == RESIDUAL_LEVEL::CbIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CbIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CbLevel4x4)
{
nA = sliceBase->macroblock[mbAddrA]->mb_chroma_4x4_non_zero_count_coeff[0][BlkIdxA];
}
else if (residualLevel == RESIDUAL_LEVEL::CrIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CrIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CrLevel4x4)
{
nA = sliceBase->macroblock[mbAddrA]->mb_chroma_4x4_non_zero_count_coeff[1][BlkIdxA];
}
else if (residualLevel == RESIDUAL_LEVEL::ChromaACLevelCb)
{
nA = sliceBase->macroblock[mbAddrA]->mb_chroma_4x4_non_zero_count_coeff[0][BlkIdxA];
}
else if (residualLevel == RESIDUAL_LEVEL::ChromaACLevelCr)
{
nA = sliceBase->macroblock[mbAddrA]->mb_chroma_4x4_non_zero_count_coeff[1][BlkIdxA];
}
}
}
if (availableFlagB)
{
if (sliceBase->macroblock[mbAddrB]->mbType == H264_MB_TYPE::P_Skip || sliceBase->macroblock[mbAddrB]->mbType == H264_MB_TYPE::B_Skip)
{
nB = 0;
}
else if (sliceBase->macroblock[mbAddrB]->mbType == H264_MB_TYPE::I_PCM) //if mbAddrN is an I_PCM macroblock, nN is set equal to 16.
{
nB = 16;
}
else
{
if (residualLevel == RESIDUAL_LEVEL::Intra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::Intra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::LumaLevel4x4)
{
nB = sliceBase->macroblock[mbAddrB]->mb_luma_4x4_non_zero_count_coeff[BlkIdxB];
}
else if (residualLevel == RESIDUAL_LEVEL::CbIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CbIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CbLevel4x4)
{
nB = sliceBase->macroblock[mbAddrB]->mb_chroma_4x4_non_zero_count_coeff[0][BlkIdxB];
}
else if (residualLevel == RESIDUAL_LEVEL::CrIntra16x16DCLevel || residualLevel == RESIDUAL_LEVEL::CrIntra16x16ACLevel || residualLevel == RESIDUAL_LEVEL::CrLevel4x4)
{
nB = sliceBase->macroblock[mbAddrB]->mb_chroma_4x4_non_zero_count_coeff[1][BlkIdxB];
}
else if (residualLevel == RESIDUAL_LEVEL::ChromaACLevelCb)
{
nB = sliceBase->macroblock[mbAddrB]->mb_chroma_4x4_non_zero_count_coeff[0][BlkIdxB];
}
else if (residualLevel == RESIDUAL_LEVEL::ChromaACLevelCr)
{
nB = sliceBase->macroblock[mbAddrB]->mb_chroma_4x4_non_zero_count_coeff[1][BlkIdxB];
}
}
}
if (availableFlagA && availableFlagB)
{
nC = (nA + nB + 1) >> 1;
}
else if (availableFlagA && !availableFlagB)
{
nC = nA;
}
else if (availableFlagB && !availableFlagA)
{
nC = nB;
}
else
{
nC = 0;
}
}
return nC;
}
int ResidualBlockCavlc::getNumCoeffAndTrailingOnes(int nC, uint16_t coeff_token, int& coeff_token_length, int& TrailingOnes, int& TotalCoeff)
{
if (0 <= nC && nC < 2)
{
if ((coeff_token >> 15) == 1) //(1)b
{
coeff_token_length = 1;
TrailingOnes = 0;
TotalCoeff = 0;
}
else if ((coeff_token >> 10) == 5) //(0001 01)b ==> (00 0101)b
{
coeff_token_length = 6;
TrailingOnes = 0;
TotalCoeff = 1;
}
else if ((coeff_token >> 14) == 1) //(01)b
{
coeff_token_length = 2;
TrailingOnes = 1;
TotalCoeff = 1;
}
else if ((coeff_token >> 8) == 7) //(0000 0111)b
{
coeff_token_length = 8;
TrailingOnes = 0;
TotalCoeff = 2;
}
else if ((coeff_token >> 10) == 4) //(0001 00)b ==> (00 0100)b
{
coeff_token_length = 6;
TrailingOnes = 1;
TotalCoeff = 2;
}
else if ((coeff_token >> 13) == 1) //(001)b
{
coeff_token_length = 3;
TrailingOnes = 2;
TotalCoeff = 2;
}
else if ((coeff_token >> 7) == 7) //(0000 0011 1)b ==> (0 0000 0111)b
{
coeff_token_length = 9;
TrailingOnes = 0;
TotalCoeff = 3;
}
else if ((coeff_token >> 8) == 6) //(0000 0110)b
{
coeff_token_length = 8;
TrailingOnes = 1;
TotalCoeff = 3;
}
else if ((coeff_token >> 9) == 5) //(0000 101)b ==> (000 0101)b
{
coeff_token_length = 7;
TrailingOnes = 2;
TotalCoeff = 3;
}
else if ((coeff_token >> 11) == 3) //(0001 1)b ==> (0 0011)b
{
coeff_token_length = 5;
TrailingOnes = 3;
TotalCoeff = 3;
}
else if ((coeff_token >> 6) == 7) //(0000 0001 11)b ==> (00 0000 0111)b
{
coeff_token_length = 10;
TrailingOnes = 0;
TotalCoeff = 4;
}
else if ((coeff_token >> 7) == 6) //(0000 0011 0)b ==> (0 0000 0110)b
{
coeff_token_length = 9;
TrailingOnes = 1;
TotalCoeff = 4;
}
else if ((coeff_token >> 8) == 5) //(0000 0101)b ==> (0000 0101)b
{
coeff_token_length = 8;
TrailingOnes = 2;
TotalCoeff = 4;
}
else if ((coeff_token >> 10) == 3) //(0000 11)b ==> (00 0011)b
{
coeff_token_length = 6;
TrailingOnes = 3;
TotalCoeff = 4;
}
else if ((coeff_token >> 5) == 7) //(0000 0000 111)b ==> (000 0000 0111)b
{
coeff_token_length = 11;
TrailingOnes = 0;
TotalCoeff = 5;
}
else if ((coeff_token >> 6) == 6) //(0000 0001 10)b ==> (00 0000 0110)b
{
coeff_token_length = 10;
TrailingOnes = 1;
TotalCoeff = 5;
}
else if ((coeff_token >> 7) == 5) //(0000 0010 1)b ==> (0 0000 0101)b
{
coeff_token_length = 9;
TrailingOnes = 2;
TotalCoeff = 5;
}
else if ((coeff_token >> 9) == 4) //(0000 100)b ==> (000 0100)b
{
coeff_token_length = 7;
TrailingOnes = 3;
TotalCoeff = 5;
}
else if ((coeff_token >> 3) == 15) //(0000 0000 0111 1)b ==> (0 0000 0000 1111)b
{
coeff_token_length = 13;
TrailingOnes = 0;
TotalCoeff = 6;
}
else if ((coeff_token >> 5) == 6) //(0000 0000 110)b ==> (000 0000 0110)b
{
coeff_token_length = 11;
TrailingOnes = 1;
TotalCoeff = 6;
}
else if ((coeff_token >> 6) == 5) //(0000 0001 01)b ==> (00 0000 0101)b
{
coeff_token_length = 10;
TrailingOnes = 2;
TotalCoeff = 6;
}
else if ((coeff_token >> 8) == 4) //(0000 0100)b ==> (0000 0100)b
{
coeff_token_length = 8;
TrailingOnes = 3;
TotalCoeff = 6;
}
else if ((coeff_token >> 3) == 11) //(0000 0000 0101 1)b ==> (0 0000 0000 1011)b
{
coeff_token_length = 13;
TrailingOnes = 0;
TotalCoeff = 7;
}
else if ((coeff_token >> 3) == 14) //(0000 0000 0111 0)b ==> (0 0000 0000 1110)b
{
coeff_token_length = 13;
TrailingOnes = 1;
TotalCoeff = 7;
}
else if ((coeff_token >> 5) == 5) //(0000 0000 101)b ==> (000 0000 0101)b
{
coeff_token_length = 11;
TrailingOnes = 2;
TotalCoeff = 7;
}
else if ((coeff_token >> 7) == 4) //(0000 0010 0)b ==> (0 0000 0100)b
{
coeff_token_length = 9;
TrailingOnes = 3;
TotalCoeff = 7;
}
else if ((coeff_token >> 3) == 8) //(0000 0000 0100 0)b ==> (0 0000 0000 1000)b
{
coeff_token_length = 13;
TrailingOnes = 0;
TotalCoeff = 8;
}
else if ((coeff_token >> 3) == 10) //(0000 0000 0101 0)b ==> (0 0000 0000 1010)b
{
coeff_token_length = 13;
TrailingOnes = 1;
TotalCoeff = 8;
}
else if ((coeff_token >> 3) == 13) //(0000 0000 0110 1)b ==> (0 0000 0000 1101)b
{
coeff_token_length = 13;
TrailingOnes = 2;
TotalCoeff = 8;
}
else if ((coeff_token >> 6) == 4) //(0000 0001 00)b ==> (00 0000 0100)b
{
coeff_token_length = 10;
TrailingOnes = 3;
TotalCoeff = 8;
}
else if ((coeff_token >> 2) == 15) //(0000 0000 0011 11)b ==> (00 0000 0000 1111)b
{
coeff_token_length = 14;
TrailingOnes = 0;
TotalCoeff = 9;
}
else if ((coeff_token >> 2) == 14) //(0000 0000 0011 10)b ==> (00 0000 0000 1110)b
{
coeff_token_length = 14;
TrailingOnes = 1;
TotalCoeff = 9;
}
else if ((coeff_token >> 3) == 9) //(0000 0000 0100 1)b ==> (0 0000 0000 1001)b
{
coeff_token_length = 13;
TrailingOnes = 2;
TotalCoeff = 9;
}
else if ((coeff_token >> 5) == 4) //(0000 0000 100)b ==> (000 0000 0100)b
{
coeff_token_length = 11;
TrailingOnes = 3;
TotalCoeff = 9;
}
else if ((coeff_token >> 2) == 11) //(0000 0000 0010 11)b ==> (00 0000 0000 1011)b
{
coeff_token_length = 14;
TrailingOnes = 0;
TotalCoeff = 10;
}
else if ((coeff_token >> 2) == 10) //(0000 0000 0010 10)b ==> (00 0000 0000 1010)b
{
coeff_token_length = 14;
TrailingOnes = 1;
TotalCoeff = 10;
}
else if ((coeff_token >> 2) == 13) //(0000 0000 0011 01)b ==> (00 0000 0000 1101)b
{
coeff_token_length = 14;
TrailingOnes = 2;
TotalCoeff = 10;
}
else if ((coeff_token >> 3) == 12) //(0000 0000 0110 0)b ==> (0 0000 0000 1100)b
{
coeff_token_length = 13;
TrailingOnes = 3;
TotalCoeff = 10;
}
else if ((coeff_token >> 1) == 15) //(0000 0000 0001 111)b ==> (000 0000 0000 1111)b
{
coeff_token_length = 15;
TrailingOnes = 0;
TotalCoeff = 11;
}
else if ((coeff_token >> 1) == 14) //(0000 0000 0001 110)b ==> (000 0000 0000 1110)b
{
coeff_token_length = 15;
TrailingOnes = 1;
TotalCoeff = 11;
}
else if ((coeff_token >> 2) == 9) //(0000 0000 0010 01)b ==> (00 0000 0000 1001)b
{
coeff_token_length = 14;
TrailingOnes = 2;
TotalCoeff = 11;
}
else if ((coeff_token >> 2) == 12) //(0000 0000 0011 00)b ==> (00 0000 0000 1100)b
{
coeff_token_length = 14;
TrailingOnes = 3;
TotalCoeff = 11;
}
else if ((coeff_token >> 1) == 11) //(0000 0000 0001 011)b ==> (000 0000 0000 1011)b
{
coeff_token_length = 15;
TrailingOnes = 0;
TotalCoeff = 12;
}
else if ((coeff_token >> 1) == 10) //(0000 0000 0001 010)b ==> (000 0000 0000 1010)b
{
coeff_token_length = 15;
TrailingOnes = 1;
TotalCoeff = 12;
}
else if ((coeff_token >> 1) == 13) //(0000 0000 0001 101)b ==> (000 0000 0000 1101)b
{
coeff_token_length = 15;
TrailingOnes = 2;
TotalCoeff = 12;
}
else if ((coeff_token >> 2) == 8) //(0000 0000 0010 00)b ==> (00 0000 0000 1000)b
{
coeff_token_length = 14;
TrailingOnes = 3;
TotalCoeff = 12;
}
else if ((coeff_token >> 0) == 15) //(0000 0000 0000 1111)b ==> (0000 0000 0000 1111)b
{
coeff_token_length = 16;
TrailingOnes = 0;
TotalCoeff = 13;
}
else if ((coeff_token >> 1) == 1) //(0000 0000 0000 001)b ==> (000 0000 0000 0001)b
{
coeff_token_length = 15;
TrailingOnes = 1;
TotalCoeff = 13;
}
else if ((coeff_token >> 1) == 9) //(0000 0000 0001 001)b ==> (000 0000 0000 1001)b
{
coeff_token_length = 15;
TrailingOnes = 2;
TotalCoeff = 13;
}
else if ((coeff_token >> 1) == 12) //(0000 0000 0001 100)b ==> (000 0000 0000 1100)b
{
coeff_token_length = 15;
TrailingOnes = 3;
TotalCoeff = 13;
}
else if ((coeff_token >> 0) == 11) //(0000 0000 0000 1011)b ==> (0000 0000 0000 1011)b
{
coeff_token_length = 16;
TrailingOnes = 0;
TotalCoeff = 14;
}
else if ((coeff_token >> 0) == 14) //(0000 0000 0000 1110)b ==> (0000 0000 0000 1110)b
{
coeff_token_length = 16;
TrailingOnes = 1;
TotalCoeff = 14;
}
else if ((coeff_token >> 0) == 13) //(0000 0000 0000 1101)b ==> (0000 0000 0000 1101)b
{
coeff_token_length = 16;
TrailingOnes = 2;
TotalCoeff = 14;
}
else if ((coeff_token >> 1) == 8) //(0000 0000 0001 000)b ==> (000 0000 0000 1000)b
{
coeff_token_length = 15;
TrailingOnes = 3;
TotalCoeff = 14;
}
else if ((coeff_token >> 0) == 7) //(0000 0000 0000 0111)b ==> (0000 0000 0000 0111)b
{
coeff_token_length = 16;
TrailingOnes = 0;
TotalCoeff = 15;
}
else if ((coeff_token >> 0) == 10) //(0000 0000 0000 1010)b ==> (0000 0000 0000 1010)b
{
coeff_token_length = 16;
TrailingOnes = 1;
TotalCoeff = 15;
}
else if ((coeff_token >> 0) == 9) //(0000 0000 0000 1001)b ==> (0000 0000 0000 1001)b
{
coeff_token_length = 16;
TrailingOnes = 2;
TotalCoeff = 15;
}
else if ((coeff_token >> 0) == 12) //(0000 0000 0000 1100)b ==> (0000 0000 0000 1100)b
{
coeff_token_length = 16;
TrailingOnes = 3;
TotalCoeff = 15;
}
else if ((coeff_token >> 0) == 4) //(0000 0000 0000 0100)b ==> (0000 0000 0000 0100)b
{
coeff_token_length = 16;
TrailingOnes = 0;
TotalCoeff = 16;
}
else if ((coeff_token >> 0) == 6) //(0000 0000 0000 0110)b ==> (0000 0000 0000 0110)b
{
coeff_token_length = 16;
TrailingOnes = 1;
TotalCoeff = 16;
}
else if ((coeff_token >> 0) == 5) //(0000 0000 0000 0101)b ==> (0000 0000 0000 0101)b
{
coeff_token_length = 16;
TrailingOnes = 2;
TotalCoeff = 16;
}
else if ((coeff_token >> 0) == 8) //(0000 0000 0000 1000)b ==> (0000 0000 0000 1000)b
{
coeff_token_length = 16;
TrailingOnes = 3;
TotalCoeff = 16;
}
}
else if (2 <= nC && nC < 4)
{
if ((coeff_token >> 14) == 0x0003) // (11)b
{
coeff_token_length = 2;
TrailingOnes = 0;
TotalCoeff = 0;
}
else if ((coeff_token >> 10) == 0x000B) // (0010 11)b
{
coeff_token_length = 6;
TrailingOnes = 0;
TotalCoeff = 1;
}
else if ((coeff_token >> 14) == 0x0002) // (10)b
{
coeff_token_length = 2;
TrailingOnes = 1;
TotalCoeff = 1;
}
else if ((coeff_token >> 10) == 0x0007) // (0001 11)b
{
coeff_token_length = 6;
TrailingOnes = 0;
TotalCoeff = 2;
}
else if ((coeff_token >> 11) == 0x0007) // (0011 1)b
{
coeff_token_length = 5;
TrailingOnes = 1;
TotalCoeff = 2;
}
else if ((coeff_token >> 13) == 0x0003) // (011)b
{
coeff_token_length = 3;
TrailingOnes = 2;
TotalCoeff = 2;
}
else if ((coeff_token >> 9) == 0x0007) // (0000 111)b
{
coeff_token_length = 7;
TrailingOnes = 0;
TotalCoeff = 3;
}
else if ((coeff_token >> 10) == 0x000A) // (0010 10)b
{
coeff_token_length = 6;
TrailingOnes = 1;
TotalCoeff = 3;
}
else if ((coeff_token >> 10) == 0x0009) // (0010 01)b
{
coeff_token_length = 6;
TrailingOnes = 2;
TotalCoeff = 3;
}
else if ((coeff_token >> 12) == 0x0005) // (0101)b
{
coeff_token_length = 4;
TrailingOnes = 3;
TotalCoeff = 3;
}
else if ((coeff_token >> 8) == 0x0007) // (0000 0111)b
{
coeff_token_length = 8;
TrailingOnes = 0;
TotalCoeff = 4;
}
else if ((coeff_token >> 10) == 0x0006) // (0001 10)b
{
coeff_token_length = 6;
TrailingOnes = 1;
TotalCoeff = 4;
}
else if ((coeff_token >> 10) == 0x0005) // (0001 01)b
{
coeff_token_length = 6;
TrailingOnes = 2;
TotalCoeff = 4;
}
else if ((coeff_token >> 12) == 0x0004) // (0100)b
{
coeff_token_length = 4;
TrailingOnes = 3;
TotalCoeff = 4;
}
else if ((coeff_token >> 8) == 0x0004) // (0000 0100)b
{
coeff_token_length = 8;
TrailingOnes = 0;
TotalCoeff = 5;
}
else if ((coeff_token >> 9) == 0x0006) // (0000 110)b
{
coeff_token_length = 7;
TrailingOnes = 1;
TotalCoeff = 5;
}
else if ((coeff_token >> 9) == 0x0005) // (0000 101)b
{
coeff_token_length = 7;
TrailingOnes = 2;
TotalCoeff = 5;